Race plate of looms



March 11, 1947. v w, BAKER 2,417,285

, RACE PLATE FOR LOOMS Filed NOV. 3, 1944 3 Sheets-Sheet l INVENTOR March 11, "1947. w H, BAKER 2,417,285

RACE, PLATE FOR LOOMS Filed Nov. 3, 1944 3 Sheets-Sheet 2 IN V EN TOR.

March 11, 1947. w A, BAKER 2,417,285

RACE PLATE FOR LOOMS F'iled Nov. 3, 1944 3 Sheets-Sheet 5 Patented Mar. 11, 1947 UNITED STATES PATENT OFFICE RACE PLATE F LOOMS William H. Baker, Boston, Mass. Application November 3, 1944, Serial No. 561,780

' 2 Claims. (01. 139-188) 1 This invention relates to improvements in looms utilizing the flying shuttle.

The object of this invention is to so construct certain parts of the loom to relieve the warpthreads of the wear and abrasion caused by the shuttle passing across the loom through the warp in contact with same. A form of the invention consists in a series of specially formed bars, arranged transversely across the race and at some distance apart on the race which is mounted lower to make room for same, leaving the upper surface of the bars in line with the floor of the shuttle boxes. The shuttle is thereby carried across the upper surface of the bars while the warp flows between the bars in the intervening spaces below the path of the shuttle, and b so doing escapes contact with same and the chafing or rub of the shuttle and the hammer or ripping action from the passing shuttle bearing down and trapping the warp between the hard shuttle and the hard or harder race plate of all looms.

In the drawings which illustrate a form of the device:

Fig. l is a fragment of the front elevation of a loom lay with other parts eliminated for simplicity.

Fig. 2 is a fragmentary play view, having the bars spaced along the length of the race.

Fig. 3 is a plan view of the lay drawn on a larger scale showing the exact shape of the parts on line AA Fig. 1.

Fig. 4 is a sectional end view on line A-A Fig. 1, showing the lay with reed in place and the bars mounted on the race. This view is also enlarged to correspond with Fig. 3.

Fig. 5 is a plan view of a section of the lay showing the protection strip.

Referring more particularly to the drawings, 1 is the lay, 2 the reed common to all looms, 3 the race, 4 is the shuttle box at the side of the loom, 5 are the new bars, 6 is the opening or cavity in the reed end of the bars, 1 is the warp, 8 is the shuttle, and 9 is the protection strip.

The main feature of this invention is the novel construction of the race plate 3. This is mounted slightly lower than at present, and is provided with a series of narrow smooth tapered bars 5 running transversely across the race plate, spaced substantially equidistant thereon in a continuous series the width of the loom, or length of the race plate, leaving suitable openings for center weft fork when used and to allow the plate to be securely fastened to the lay beg n so the top of the bars will form a smooth even track for the shuttle to cross the loom, While the warp threads are lying safely below the path of the shuttle between the said bars. The ends of bars 5 are carefully tapered off at 6 as shown in Figs. 4-5 so as to offer the least possible resistance to the yarn flowing over the race plate. The tops of the bars 5 are to be in line with the floor of the shuttle boxes at the ends of the lay and when the shuttle passes across the lay or loom, it rides on the bars, while the warp in the spaces between the bars is safely below the path of the shuttle. A simple way to express this arrangement of warp and shuttle roughly, would be to think of a plane where the warp rests on the white keys while the shuttle is running on the black keys. The bars 5 can be made integral with the race plate, as shown in Figs. 4 and 5, or they can be formed from separate pieces and of suitable material and fastened securely by any known means to the race plate.

In practice it has been found the warp yarn flowing forward through the reed in the process of weaving would sometimes ride up over the point of the bars 5 near the reed and lie on the top of the bar when the shuttle was passing, and in this way was often struck by the shuttle and cut or broken, causing serious damage to the fabric, and also causing extra work for the weaver and loss of production of cloth. To prevent this the ends of bars 5 have been cut away at 6, Figs. 3 and 4 so the yarn When encountering the tapered point of the bar as it emerges from the reed, slips below the upper part of the bar, see Fig. 4, into the comparatively roomy space below where it slips along safely with the rest of the warp, and this novel shape of the apex of the bars is an. important part of the invention.

Often the fabrics are woven in a loom where they do not fill out the full length of the reed space and some of the bars 5 are left exposed to the floating filling as shown in Fig. 5. To prevent the filling from slipping beneath the cavities 6, in the apex of the bars 5 I provide a piece of suitable material 9 to fit into the spaces, and to extend to the face of the reed as clearly indicated in Figs. 4 and 5. These protector strips are introduced just before the reed is fitted in the loom, and the reed securely holds same through the life of the warp. The foregoing describes a successful adaptation of this invention, but I do not confine myself to this exact construction as other means can be employed in carrying out same,

Having thus described my invention what I 7 claim is:

1. In a 100m having a race, said race consisting of bars running parallel with the warp, and being under-cut on its front end nearest to the reed to 5 under the first taper for the purpose described. 1';

WILLIAM REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number v Name Date 352,425 Priestley Nov. 9, 1885. 1,071,358 Stutz Aug. 26, 1913 10 12,020,142 QShimwell Nov..12, 1935 $248,641 'Moessinger July 8, 1941 2,316,703 Moessinger Apr. 13, 1943 123,647 Smith et a1 Feb. 13, 1872 5652;864 Schmidt July 3, 1900 960,433 Stutz June 7, 1910 

